rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4674/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=78245, q=512 ncpus=2)
task:udevd state:R running task stack:22240 pid:4674 tgid:4674 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__page_table_check_zero+0xb4/0x350 mm/page_table_check.c:150
Code: bd 00 00 00 82 23 2b bf 00 00 00 80 89 ee e8 03 89 8d ff 81 fd 00 00 00 80 0f 84 f7 01 00 00 4c 89 f7 e8 5f f9 ff ff 48 85 c0 <48> bb 00 00 00 00 00 fc ff df 0f 84 58 01 00 00 49 89 c4 8b 74 24
RSP: 0018:ffffc900036af5e0 EFLAGS: 00000286
RAX: ffff888018cac8a0 RBX: ffffea000188a0b0 RCX: ffff88807e635a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000082000000 R08: ffffffff8206047a R09: 1ffffffff26e6908
R10: dffffc0000000000 R11: fffffbfff26e6909 R12: ffffea000188a080
R13: 0000000000000000 R14: ffffea000188a080 R15: ffffea000188a088
page_table_check_free include/linux/page_table_check.h:41 [inline]
free_pages_prepare mm/page_alloc.c:1095 [inline]
free_unref_page+0xd36/0xea0 mm/page_alloc.c:2612
discard_slab mm/slub.c:2583 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3051
put_cpu_partial+0x17c/0x250 mm/slub.c:3126
__slab_free+0x2ea/0x3d0 mm/slub.c:4343
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x23/0xb0 mm/kasan/common.c:378
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slub.c:4158 [inline]
__kmalloc_noprof+0x1fc/0x400 mm/slub.c:4170
kmalloc_noprof include/linux/slab.h:685 [inline]
tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x2b7/0x740 security/tomoyo/file.c:822
security_inode_getattr+0xda/0x130 security/security.c:2269
vfs_getattr+0x45/0x430 fs/stat.c:204
vfs_statx_path fs/stat.c:251 [inline]
vfs_statx+0x199/0x490 fs/stat.c:315
vfs_fstatat+0x145/0x190 fs/stat.c:341
__do_sys_newfstatat fs/stat.c:505 [inline]
__se_sys_newfstatat fs/stat.c:499 [inline]
__x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:499
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff1a6f165f4
RSP: 002b:00007ffdb48c9818 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000562c040f36c0 RCX: 00007ff1a6f165f4
RDX: 00007ffdb48c9828 RSI: 0000562c040e17ed RDI: 00000000ffffff9c
RBP: 0000562c258afc28 R08: 00000000342505c3 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 0000562c040e7dca
rcu: rcu_preempt kthread starved for 2938 jiffies! g78245 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:24304 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:89 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x8c/0x290 mm/kasan/generic.c:189
Code: 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 0f 85 c9 01 00 00 <49> ff c3 48 ff c5 75 ee e9 1e 01 00 00 45 89 dc 41 83 e4 07 0f 84
RSP: 0018:ffffc90000006ea0 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffffffff26e6908 RCX: ffffffff816fe6d7
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff93734840
RBP: ffffffffffffffff R08: ffffffff93734847 R09: 1ffffffff26e6908
R10: dffffc0000000000 R11: fffffbfff26e6908 R12: 0000000000000000
R13: ffffffff8e695158 R14: dffffc0000000001 R15: fffffbfff26e6909
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30011ff8 CR3: 000000002dc44000 CR4: 0000000000350ef0
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:227 [inline]
__lock_acquire+0x1297/0x2040 kernel/locking/lockdep.c:5139
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
debug_objects_fill_pool+0x9f/0x9b0 lib/debugobjects.c:615
debug_object_activate+0x135/0x510 lib/debugobjects.c:705
debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
debug_activate kernel/time/hrtimer.c:478 [inline]
enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1085
__run_hrtimer kernel/time/hrtimer.c:1706 [inline]
__hrtimer_run_queues+0x6cb/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2010 [inline]
RIP: 0010:vprintk_emit+0x5ac/0x7c0 kernel/printk/printk.c:2347
Code: 09 20 00 4c 21 e3 0f 85 3a 01 00 00 e8 1d 04 20 00 4d 89 ec 4d 85 ff 75 07 e8 10 04 20 00 eb 06 e8 09 04 20 00 fb 44 8b 3c 24 <48> c7 c7 20 3d 81 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00
RSP: 0018:ffffc900000077a0 EFLAGS: 00000246
RAX: ffffffff81738a07 RBX: 0000000000000000 RCX: ffffffff8e694680
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007890 R08: ffffffff817389e5 R09: 1ffffffff26e690b
R10: dffffc0000000000 R11: fffffbfff26e690c R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff81738865 R15: 0000000000000022
_printk+0xd5/0x120 kernel/printk/printk.c:2373
show_one_workqueue+0x107/0x290 kernel/workqueue.c:6250
show_all_workqueues+0x14b/0xad0 kernel/workqueue.c:6340
wq_watchdog_timer_fn+0x782/0xf40 kernel/workqueue.c:7523
call_timer_fn+0x190/0x650 kernel/time/timer.c:1792
expire_timers kernel/time/timer.c:1843 [inline]
__run_timers kernel/time/timer.c:2417 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
run_timer_base kernel/time/timer.c:2437 [inline]
run_timer_softirq+0x103/0x170 kernel/time/timer.c:2448
handle_softirqs+0x2c6/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d7 03 00 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d 85 12 b3 00 f3 0f 1e fa fb f4 e9 c4 2f 39 00 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e607ca8 EFLAGS: 00000246
RAX: ffffffff8e694680 RBX: ffff88801bac7864 RCX: 00000000003d1e19
RDX: 0000000000000001 RSI: ffff88801bac7800 RDI: ffff88801bac7864
RBP: 000000000003a678 R08: ffff8880b9237c7b R09: 1ffff11017246f8f
R10: dffffc0000000000 R11: ffffffff8bb70cf0 R12: ffff88801c701000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8f0df040
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
cpuidle_enter_state+0x114/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:326
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
rest_init+0x2dc/0x300 init/main.c:747
start_kernel+0x47a/0x500 init/main.c:1103
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4
pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker
workqueue wg-kex-wg0: flags=0x24
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_receive_worker
workqueue wg-kex-wg0: flags=0x6
pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4
pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker
workqueue wg-kex-wg1: flags=0x24
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_receive_worker
workqueue wg-kex-wg1: flags=0x6
pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4
pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker
workqueue wg-crypt-wg2: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg1: flags=0x24
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg1: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4
pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encrypt_worker
workqueue wg-crypt-wg2: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg0: flags=0x6
pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
pending: wg_packet_encrypt_worker
workqueue wg-kex-wg1: flags=0x6
pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
pending: wg_packet_encrypt_worker
workqueue wg-kex-wg0: flags=0x6
pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4
pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker
workqueue wg-kex-wg1: flags=0x6
pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4
pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg2: flags=0x24
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg2: flags=0x28
pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4
pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encrypt_worker
pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=189s workers=8 idle: 5300 8 5347
pool 6: cpus=1 node=0 flags=0x2 nice=0 hung=2s workers=8 manager: 5310 idle: 25 5333 5249 5243 59 8941
pool 8: cpus=0-1 flags=0x6 nice=0 hung=21s workers=14 manager: 35
pool 9: cpus=0-1 node=0 flags=0x4 nice=-20 hung=125s workers=5 idle: 5245 55
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 2:
task:kworker/0:8 state:R running task stack:23344 pid:8812 tgid:8812 ppid:2 flags:0x00004000
Workqueue: wg-crypt-wg1 wg_packet_encrypt_worker
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irq+0x44/0x50 kernel/locking/spinlock.c:202
process_one_work kernel/workqueue.c:3200 [inline]
process_scheduled_works+0x848/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
pool 2:
task:kworker/0:4 state:R running task stack:20440 pid:5299 tgid:5299 ppid:2 flags:0x00004000
Workqueue: wg-crypt-wg2 wg_packet_decrypt_worker
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__local_bh_enable_ip+0x179/0x200 kernel/softirq.c:389
spin_unlock_bh include/linux/spinlock.h:396 [inline]
ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline]
wg_packet_decrypt_worker+0xcde/0xd80 drivers/net/wireguard/receive.c:499
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
pool 2:
task:kworker/0:7 state:R running task stack:20720 pid:5408 tgid:5408 ppid:2 flags:0x00004000
Workqueue: events nsim_fib_event_work
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
schedule_timeout_uninterruptible kernel/time/timer.c:2615 [inline]
msleep+0xa2/0xe0 kernel/time/timer.c:2736
nsim_fib6_rt_add drivers/net/netdevsim/fib.c:693 [inline]
nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:759 [inline]
nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline]
nsim_fib_event drivers/net/netdevsim/fib.c:889 [inline]
nsim_fib_event_work+0x2e2f/0x4130 drivers/net/netdevsim/fib.c:1492
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
pool 2:
task:kworker/0:1 state:R running task stack:20976 pid:9 tgid:9 ppid:2 flags:0x00004000
Workqueue: wg-crypt-wg1 wg_packet_encrypt_worker
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
_raw_spin_unlock_irq+0x44/0x50 kernel/locking/spinlock.c:202
process_one_work kernel/workqueue.c:3200 [inline]
process_scheduled_works+0x848/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
pool 2:
task:kworker/0:3 state:R running task stack:23216 pid:8811 tgid:8811 ppid:2 flags:0x00004000
Workqueue: events kfree_rcu_work
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
unwind_next_frame+0x2124/0x2a00 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free_freelist_hook mm/slub.c:2281 [inline]
slab_free_bulk mm/slub.c:4497 [inline]
kmem_cache_free_bulk+0x1f8/0x370 mm/slub.c:4714
kfree_bulk include/linux/slab.h:570 [inline]
kvfree_rcu_bulk+0x24b/0x4e0 kernel/rcu/tree.c:3405
kfree_rcu_work+0x44b/0x500 kernel/rcu/tree.c:3484
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244